You cannot escape advertizements in daily life and you may well find that they pop up in your dreams too.
If an advertizement does feature in your dream, its purpose will be to highlight your aspirations—so pay particular attention to the content of the advert. What or who was it trying to sell? If your dreaming mind lingered over the advert for shoes, a fast car, holiday or any other object of your desire, your uncon—scious may simply be reflecting your waking obsession with it.
If the dream highlighted cosmetics or clothes, your dreaming mind may be encouraging you to change your image in some way in waking life.
[1]